Ambient Air Monitoring Network

DHEC operates air monitoring stations throughout South Carolina to measure the concentrations of pollutants in outdoor (ambient)
air that are considered harmful to public health and the environment. The EPA sets national ambient air standards for each
type of pollutant and sets minimum requirements for both the number and distribution of monitors among metropolitan statistical
areas. The EPA also requires states to meet quality assurance and other standards.

Visit DHEC's South Carolina Ambient Air Monitoring map to see the location
of all the air quality monitoring stations in South Carolina. Click on a location to bring up a description of the monitoring
site and an explanation of what we are measuring at that location. The map also provides historical graphs showing concentrations
of major pollutants found at each monitoring station.

Ambient Air Network Monitoring Plan

The EPA requires States to have a yearly monitoring network plan in place and conduct periodic network assessments (every
five years beginning in 2010).

Here is the most recent annual ambient air network monitoring plan and periodic network assessment:

1998-2011 Ambient Air Quality Monitoring Data Summaries

Monitoring the air we breathe is one of the most important responsibilities of the Bureau of Air Quality (BAQ). The data
we collect is used by the U.S Environmental Protection Agency, individuals within DHEC, and the general public. A history
of South Carolina's Ambient Air Quality Data Summaries and Criteria Pollutant Daily Maxima are presented below.

Note: Some of these files are very large and could be slow to download. Documents below are presented in xls or pdf format.BAQ Annual Report (1990 - 2005) Ambient Air Quality Monitoring Data is located in the appendix, starting
on page 45